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  • Users: SmartEngineer
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  1. SmartEngineer

    Oil in Steam boilers Burners

    Does anyone of you have an experience with using crude oil for burners in steam boilers? If so, what type of treatment for sulpher or others are conidered. Thank you in advance SmartEngineer
  2. SmartEngineer

    Price of acetylene

    Thank you Eltron for the info Can you give the price per ton or kg ? Cheers SmartEngineer
  3. SmartEngineer

    Pyrolysis Fuel oil burning

    If I remember well, non of the cracking furnaces I have seen has burner handling FOP. Therefore, this doesn't mean that using FOP is not possible but you just need to check with vendors of burners and the furnaces technology provide to assure you no impact and feasible. But I do see the...
  4. SmartEngineer

    Do you believe in the 5 year rule?

    For me, I did move into another company with similar business as previous one after 5 years. The reason is that the previous company did not give me anything either promotion nor salary increase when I got my MS degree in same major (Chemical Eng) as part-time student for about 4.5 year...
  5. SmartEngineer

    Debutanizer Reboiler Fouling

    Most of the DeC4 columns I have seen in about 4 ethylene plants do have reboiler with spare one. The reason is that the base temperature causes the conversion of dienes to form polymerization material. You can do the following: - Add a spare reboiler if you are concerned about down time and do...
  6. SmartEngineer

    Price of acetylene

    Does any one know the price of acetylene nowadays? I'm evaluating a process (Absorption by DMF)for recovery of acetylene from cracked gas process of an ethylene plant? Any help is highly appreciated Cheers SmartEngineer
  7. SmartEngineer

    Code Case 2211 and UG-125(g)

    I think you need to have PSV if there is possibility of blockage of the HE equipment and where compressor PSVs are way from the blockage piping system. If there is no isolation valves in between, using PSV of compressor would be possible if these safety valves can cover the max flow of the...
  8. SmartEngineer

    tank's drain size

    I think this is generic question as many factors fall on the selection of drain size of tanks. Such factors are steam-out purposes, size of the tank, material stored..etc I have seen various drain sizes as 2" for small tanks and 6" for large tanks Hope this would help cheers SmartEngineer
  9. SmartEngineer

    PSV for a piping line

    Your question needs further elaboration I got questions for you: - Are there isolation valves causing blocked discharge of cold fluid - If yes, then pumps are not of a problem as you will look for the trapped or blocked volume of liquid in the piping having isolation valves from both sides...
  10. SmartEngineer

    cooling water piping velocity

    Sorry for making a question with this post but it is related to the same subject: Which one velocity limit or pressure drop is the criteria of sizing of cooling water piping? Cheers SmartEngineer
  11. SmartEngineer

    To be a Manager?

    machmech I think most of the managers fall on your explanation as you did give the usual way of the people who become managers.. Cheers SmartEngineer
  12. SmartEngineer

    Pre-shutdown unit decontamination

    There are some companies specialized in such applications. From experience, we did use a special contractor to do chemical cleaning of a system similar to system and the result was a mazy (time take is 2 days compared to 7 days we used to to take for cleaning) You can look to the market where...
  13. SmartEngineer

    relief valve on gas electric heater

    I think you need to have safety valve to protect the piping from damage that would lead to significant damage. Sizing the safety valve depends on the gas properties (expansion coefficient and others) that will be subjected to constant heat flux when the line is blocked. Hope this would help...
  14. SmartEngineer

    Heat transfer question

    I have got a question by one of my friends as follows: - In a heat exchanger, assuming the heating side on the shell side is constant, the question is that if the flow rate of the cold stream in the tube side is reduced, Is its outlet temperature is gone be high or low? His answer to this...
  15. SmartEngineer

    To be a Manager?

    Thanks for the contributions Let me express my view as well: Being a manager is the one of our goals in the future of most of us that we are looking for to get one day. Even it is early for some people to think about the managerial position but it gives the power and push to do the best in the...
  16. SmartEngineer

    Vacuum formation in a pessure vessel

    I have seen similar to your case, the vessel has HC and in case of vacuum pulling much air would cause explosive mixture and explosion. Nitrogen with PC signal is added to break the vacuum and prevent air entering to the vessel by inbreathing valves. I think that you can provide Nitrogen with...
  17. SmartEngineer

    To be a Manager?

    Someone can ask himself one day, Am I going to be a manager one day? I'm just posting this question to share the views and thoughts of the members here about this subject as it's concerned most of us. Another question raised as well, how can I be a Manager one day ?what things should I do or...
  18. SmartEngineer

    Vendors of Blowback

    Does any one know the names of the suppliers of Blowback assembly for level transmitters and pumps? Thank you in advance Cheers SmartEngineer
  19. SmartEngineer

    Polishing clean condenaste

    Thanx The steam generated is HP steam by steam boilers and using it for driving turbines, and heating medium for heat exchangers Cheers
  20. SmartEngineer

    cooling water piping velocity

    From my experience, the usual recommended velocity range for CW is 0.3 to 2.4 m/sec and for seawater (assume it is dosed with chlorine) is 1.5 min and 4 m/s max. Hope this would help cheers SmartEngineer

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